- #1
KillerZ
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Homework Statement
The cylinder C is being lifted using the cable and pulley system shown. If point A on the cable is being drawn toward the drum with a speed of 2 m/s, determine the speed of the cylinder.
Homework Equations
[tex]2s_{A} + s_{b} = l[/tex]
The Attempt at a Solution
I set my points to this:
I don't think its right because I am getting a negative number when it should be positive.
[tex]2s_{A} + s_{b} = l[/tex]
[tex]2v_{A} + v_{b} = 0[/tex]
[tex]v_{b} = -2(2m/s) = -4 m/s[/tex] This would mean that the cylinder is going down not up.